/**
 * Copyright 2011 rkehoe
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * 
 */
package example.domain.objects;

import java.util.Collections;
import java.util.EnumSet;
import java.util.Random;
import java.util.Set;

/**
 * @author rkehoe
 *
 */
public enum Colour
{
	Red,Black,Green,Blue,White,Brown,Yellow,Orange,Indigo,Violet;

	public static Set<Colour> ALL_COLOURS;
	static
	{
    	EnumSet<Colour> allOf = EnumSet.allOf(Colour.class);
    	ALL_COLOURS = (Set<Colour>) Collections.unmodifiableSet(allOf);		
	}

    public static Colour not(Colour c)
    {
    	EnumSet<Colour> allOf = EnumSet.allOf(Colour.class);
    	allOf.remove(c);
    	Colour[] randomColours = allOf.toArray(new Colour[0]);    	
    	int item = new Random().nextInt(randomColours.length);
	    return randomColours[item];
    }

    public static Colour random()
    {
    	Colour[] randomColours = ALL_COLOURS.toArray(new Colour[0]);    	
    	int item = new Random().nextInt(randomColours.length);
	    return randomColours[item];
    }

}
